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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1fa25f23c1e5e670affcc91e2094a77523f112078b535bd14cdfae44db4f586f' 
  AND token = 'OgjLZLg0wifQ+xCl0nkUOKUw/xnlUzNssFwunwue9+A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}